Long range bullet

Abstract

The invention provides a long range bullet. The bearing surface of the body of the bullet is provided with one or more annular narrows of which the combined length is at least one third of the length of the bearing surface of the bullet and which depth is between 0.005 mm up to half of the groove depth of a barrel in which the bullet is intended to shoot.

Claims

1. A bullet configured to be attached to a cartridge and fired through a barrel, the cartridge having a case neck, and the barrel having a groove, the groove having a groove depth, the bullet comprising: a body; a bearing surface on the body; and a single annular narrow on the bearing surface and having a length and a depth, the length being at least one third of a length of the bearing surface of the bullet, and the depth being between 0.005 to 0.025 mm, wherein the depth is sized to correspond to up to half of the groove depth of the barrel through which the bullet is intended to be fired.

2. The bullet as claimed in claim 1, wherein the narrow has a concave profile.

3. The bullet as claimed in claim 1, wherein the bearing surface has a smooth longitudinal profile, and whereby cannelure rings are not required.

Description

DETAILED DESCRIPTION OF THE INVENTION

(1) The invention also has reference to flat base bullets. The trajectory of flat based bullets can also be similarly improved by employing the narrow or the recess for such a bullet.

(2) The invention is now described by way of example with reference to the further accompanying drawings.

(3) In the drawings:

(4) FIG. 1 shows a profile and perspective view of one embodiment of a long range bullet, in accordance with the invention;

(5) FIG. 2 shows dimensions of the bullet shown in FIG. 1;

(6) FIG. 3 shows a profile and perspective view of another embodiment of a long range bullet, in accordance with the invention;

(7) FIG. 4 shows dimensions of the bullet shown in FIG. 3;

(8) FIG. 5 shows a profile and perspective view of another embodiment of a long range bullet, in accordance with the invention;

(9) FIG. 6 shows dimensions of the bullet shown in FIG. 5;

(10) FIG. 7 shows a bullet having multiple narrows, each having a depth of 0.02 mm below the groove diameter;

(11) FIG. 8 shows an example long range bullet FIG. 9 is a cross sectional view of a barrel;

(12) FIG. 10 shows a bullet having a bearing surface with one or more annular narrows;

(13) FIG. 11 illustrates a bullet experiencing a pressure build-up; and

(14) FIG. 12 shows another example bullet.

(15) Referring now to the drawings, the bullet, in accordance with the invention, is generally indicated by reference numeral 10.

(16) In the shown embodiments, each of the copper bullets 10 has a spitzer point 12, a boat tail 14, a secant ogive 16 and cylinder part 18 or bore bearing part.

(17) FIGS. 1 and 2 shows a bullet 10 of which the cylinder part 18 of the body is provided with a single smooth concave annular narrow 20 of 7.099 mm length with a bearing surface length of 1.751 mm remaining of the cylinder 10. The depth of the narrow is 0.0155 mm along its middle.

(18) FIGS. 3 and 4 shows a bullet 10 of which the cylinder part 18 of the body is provided with a single angled annular narrow 20 of 3.750 mm length with a bearing surface length of 5.700 mm remaining of the cylinder 10. The depth of the narrow is 0.264 mm along its middle.

(19) FIGS. 5 and 6 shows a similar bullet 10 of which the cylinder part 18 of the body is provided with a single angled annular narrow 20 of 4.200 mm length with a bearing surface length of 5.900 mm remaining of the cylinder 10. The depth of the narrow is 0.264 mm along its middle.

(20) FIG. 7 shows a bullet having multiple narrows, each having a depth of 0.02 mm below the groove diameter. The profile of one of the narrows is indicated by the radius of a circle defining the profile.

(21) It shall be understood that the examples are provided for illustrating the invention further and to assist a person skilled in the art with understanding the invention and are not meant to be construed as unduly limiting the reasonable scope of the invention.